Anguillara were a baronial family of Latium, especially powerful in Rome and in the current province of Viterbo during the Middle Ages and the early Renaissance. The Anguillara were of Norman descent. They most likely took, or gave, their name from the city of Anguillara Sabazia, on the Lake Bracciano. The name itself could refer to the Italian word anguilla (eel), or, as claimed by some, to a Roman villa (villa angularia) on a corner (Latin: angulum) of the Lake.